Hi guys, I'm kinda new to computer controlled cars. Am in the process of building this 87 GTA. I know I'm going to have to learn how to program a chip, What I need to know is are all gm memcals interchangable? My buddy has given me three differant memcals. Don't know what their out of. Can I use these when I start? Or do I have to have a 87 memcal? I just installed the hypertech one tonight and it runs much better but smells much richer. Car was a 305 before. Thanks !!

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87 GTA 355/700r4
ported&polished 083 heads
xe268h comp cam
1 5/8 blackjack alumicote
homebuilt y pipe,pasesetter 3in mandrel cat back.
ported/manifold,upper plentum, tpis maf.
airfoil, 24# svo injectors, hypertech stage 3 chip, underdrive pulleys, erson roller rockers, chromemolley pushrods,2100 stall, shiftkit, 373 10 bolt.

 

No they are not all interchangeable.... I would first identify what you have...

Look at the tech article at the top of this page, and go towards the bottom where you can see a couple of places listed that have the Prom codes on it.

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Mike Metzler (Desert86Roc)[*] Webmaster: SpeedWorldMotorplex.com[*] Click Here For 86 IROC 305 TPI (406 build in progress) Page

ET's @ 1250 ft[*] 14.28 @ 95.461 mph (uncorrected, NOS, no headers)[*] 15.365 @ 86.785 mph (uncorrected, headers, no NOS)
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